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For Insects, Spiders & Their Kin
For the United States & Canada

Species Ophion slossonae

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Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Parasitica" (parasitoid Apocrita))
Superfamily Ichneumonoidea (Braconid and Ichneumonid Wasps)
Family Ichneumonidae (Ichneumonid Wasps)
Subfamily Ophioninae (Short-tailed Ichneumonid Wasps)
Genus Ophion
Species slossonae (Ophion slossonae)
Synonyms and other taxonomic changes
Ophion slossonae Davis, 1893
Ophion ferruginipennis Felt, 1904
Explanation of Names
Ophion slossonae Davis, 1893
slossonae = named after Anna "Annie" Trumbull Slosson, an American entomologist who reared the type material.
body 19-25 mm (antennae another 22-28 mm)(1)
wing 18-22 mm (wingspread 38-46 mm)(1)
Noted as a large ophionine with often very dark wings and a contrasted fulvous (brownish-orange) pterostigma. The ocelli are especially large and prominent, further separated than in many other species.

Per Marla Schwarzfeld: "Ophion slossonae is by far the largest Nearctic Ophion species I have examined, and also has unusually dark infuscate wings (Figure 3-2d); this last species was only successfully sequenced for COI."(2)

While a few other species of Ophion have pigmented wings, they are either subhyaline or subfuliginous (more pale in pigmentation), not truly becoming fuliginous (blackened).(1)
"from the lower Boreal at 45° to the lower edge of the Upper Austral at 38°, and possibly into the Lower Austral zones."(1)
June-September (most abundant August-September)(1)
Larvae are parasitoids of Lepidoptera. The full range of hosts is unknown, but the type material was reared from a "dark cocoon of one of the larger species of Acronycta (Apatela)."(1)
Life Cycle
Very little is known.(1)
Works Cited
1.The Ichneumon Flies of America Belonging to the Tribe Ophionini
Charles W. Hooker. 1912. Transactions of the American Entomological Society, vol. 34.
2.Systematics and diversity of Ichneumonidae, with an emphasis on the taxonomically neglected genus Ophion Fabricius
Marla D. Schwarzfeld. 2013. University of Alberta.